package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

@Service
@Slf4j
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对

         password = DigestUtils.md5DigestAsHex(password.getBytes());
        log.info("加密后的密码为：{}",password);
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus().equals(StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //开启分页插件
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        //优化   如果name不为null   可以消除前后多余的空格
        if (StringUtils.isNotBlank(employeePageQueryDTO.getName())){
            employeePageQueryDTO.setName(employeePageQueryDTO.getName().trim());
        }
        Page<Employee> page  = employeeMapper.page(employeePageQueryDTO);

        return new PageResult(page.getTotal(), page.getResult());
    }


    /**
     * 新增员工
     *
     * @param employeeDTO
     * @return
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        //因为前端传来的数据只是数据库的一部分  我们从后端新增要补全些数据
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        //设置员工创建后的默认是  启用
        employee.setStatus(StatusConstant.ENABLE);
        employee.setPassword(DigestUtils.md5DigestAsHex((PasswordConstant.DEFAULT_PASSWORD).getBytes()));
        /*employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.save(employee);
    }


    /**
     * 回显id
     * @param id
     * @return
     */
    @Override
    public Employee getById(Integer id) {
        Employee employee = employeeMapper.getById(id);
        return employee;
    }

    /**
     * 修改员工信息
     * @param employeeDTO
     * @return
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
       /* employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.update(employee);
    }

    /**
     * 修改员工状态
     * @param id
     * @param status
     * @return
     */
    @Override
    public void updateStatus(Long id, Integer status) {
        Employee employee = Employee.builder()
                .id(id)
                .status(status).build();
        employeeMapper.update(employee);
    }

}
